Fact1 : 1990- nearly 80% of people in the United States reported that they knew someone who had been diagnosed with cancer
Fact2 : 2010- nearly 80% of people in the United States reported that they knew someone who had been diagnosed with cancer
Fact3 : cancer incidence rates in the population increased by over 40% from 1990 to 2010.Now a way the percentage of people who knew someone with cancer could have remained unchanged despite the dramatic increase in the incidence of cancer is that the cases of new cancer are known to people who already know somebody with cancer.
This is the scenario in Choice B as in a densely populated urban center a lot of people will be knowing each other and hence number of people who knows many cancer patients will be common.
A. Improved treatment options dramatically reduced cancer mortality rates from 1990 to 2010.
Incorrect : Irrelevant
B. From 1990 to 2010, most new cases of cancer occurred in densely populated urban centers with previously high cancer rates.Correct: In a densely populated urban center a lot of people will be knowing each other and hence number of people who knows many cancer patients will be common.
C. Many of the new cancer cases from 1990 to 2010 occurred in geographically isolated regions where little or no cancer had been present before.
Incorrect: This will increase the people who know a cancer patient.
D. From 1990 to 2010, some of the new cancer cases occurred in people who had previously been diagnosed with another form of cancer.
Incorrect as talks about some of the cancer cases while the increase is around 40%.
E. Because of dramatic technological improvements in diagnostic tools from 1990 to 2010, cancer was more likely to be diagnosed in 2010 than in 1990.
Incorrect : Doesn’t help in knowing why percentage people knowing cancer patient haven’t changed.
The Kudo please